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Characterization and beneficiation studies for the removal of iron from a china clay from India

Published online by Cambridge University Press:  09 July 2018

B. Kar ,
H. Sahoo ,
S. S. Rath ,
D. S. Rao  and
B. Das
B. Kar
Affiliation:
CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013, India
H. Sahoo
Affiliation:
CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013, India
S. S. Rath
Affiliation:
CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013, India
D. S. Rao
Affiliation:
CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013, India
B. Das*
Affiliation:
CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013, India
*
*E-mail: [email protected]
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Abstract

A china clay sample from Jharkhand State, India, containing 65.0 wt.% SiO2, 22.7% Al2O3, 1.77% Fe2O3 and 9.10% LOI was subjected to physical beneficiation and acid leaching studies to improve its quality. The clay was characterized by optical microscopy, XRD, and wet chemical analysis methods. Quartz and goethite are the two major impurities. High intensity magnetic separation removed only 10% of the total iron. Experiments with oxalic acid were carried out to establish the leaching kinetics of iron and the effects of acid concentration, time and temperature on iron leaching were also examined. The study demonstrated that ∼90% of total iron could be removed using 5% oxalic acid. The dissolution of iron from clay is best described by diffusion of ions through the product layer of constant size spherical particles. The activation energy of the leaching process over the temperature range was calculated to be 51.14 kJ/mol.

Keywords

china claycharacterizationironmagnetic separationleachingoxalic acidJharkhand StateIndia
Type
Research Article
Information
Clay Minerals , Volume 48 , Issue 5 , December 2013 , pp. 759 - 769
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2013

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References

Afonso, M.S., Morando, P.J., Blesa, M.A., Banwart, S. & Stumm, W. (1990) The reductive dissolution of iron oxides by ascorbate. Journal of Colloid and Interface Science, 138, 74–82.Google Scholar
Ambikadevi, V.R. & Lalithambika, M. (2000) Effect of organic acids on ferric iron removal from ironstained kaolinite. Applied Clay Science, 16, 133–145.Google Scholar
Bahranowski, K., Serwicka, E.M., Stoch, L. & Strycharski, P. (1993) On the possibility of removal of nonstructural iron from kaolinite-group minerals. Clay Minerals, 28, 379–391.Google Scholar
Basilio, C., Lowe, R.A., Gorken, A., Magliocco, L. & Hagy, R. (2000) Modified hydroxamate collectors for kaolin flotation. In: Developments in Mineral Processing. Proceedings of the XXI International Mineral Processing Congress, 13, C8b-51–C8b-55C.CrossRefGoogle Scholar
Chandrasekhar, S. & Ramaswamy, S. (2006) Iron minerals and their influence on the optical properties of two Indian kaolins. Applied Clay Science, 33, 269–277.CrossRefGoogle Scholar
Chaudhury, G.R. & Das, R.P. (1990) Biological removal of iron from china clay. Erzmetall, 43, 210–212.Google Scholar
Christidis, G.E. (2011) Industrial Clays. Pp. 341–414 in: Advances in the Characterization of Industrial Minerals (G.E. Christidis, editor). EMU Notes in Mineralogy, 9, European Mineralogical Union, Mineralogical Society of Great Britain and Ireland.Google Scholar
Cornell, R.M. & Schindler, P.W. (1987) Photochemical dissolution of goethite in acid/oxalate solution. Clays and Clay Minerals, 35, 347–352.Google Scholar
Giese, R.F. Jr. (1988) Kaolin minerals: Structures and stabilities. Pp. 26–92 in: Hydrous Phyllosilicates (Exclusive of Mica), (S.W. Bailey, editor). Reviews in Mineralogy, 19, Mineralogical Society of America.Google Scholar
Grim, R.E., (1968) Clay Mineralogy, International Series in the Earth and Planetary Sciences, Second edition. McGraw-Hill, New York.Google Scholar
Kumar, S. (1994) Handbook of Ceramics, Kumar & Associates, Calcutta, 1, 59–66.Google Scholar
Lee, E.Y., Cho, K. & Ryu, H.W. (2002) Microbial refinement of kaolin by iron-reducing bacteria. Applied Clay Science, 22, 47–53.CrossRefGoogle Scholar
Lee, S.O., Tran, T., Park, Y.Y., Kim, S.J. & Kim, M.J. (2006) Study on the kinetics of iron oxide leaching by oxalic acid. International Journal of Mineral Processing, 80, 114–152.CrossRefGoogle Scholar
Lee, S.O., Tran, T., Jung, B.H., Kim, S.J. & Kim, M.J. (2007) Dissolution of iron oxide using oxalic acid. Hydrometallurgy, 87, 91–99.Google Scholar
Mandal, S.K. & Banerjee, P.C. (2004) Iron leaching from Chinaclay with oxalic acid: effect of different physico-chemical parameters. International Journal of Mineral Processing, 74, 263–270.Google Scholar
Martinez-Luevanos, A., Rodriguez-Delgado, M.G., Uribe-Salas, A., Carrillo-Pedroza, F.R. & Osuna-Alarcona, J.G. (2011) Leaching kinetics of iron from low grade kaolin by oxalic acid solutions, Applied Clay Science, 51, 473–477.CrossRefGoogle Scholar
Maurya, C.B. & Dixit, S.G. (1990) Effect of pH on the high-gradient magnetic separation of kaolin clay. International Journal of Mineral Processing, 28, 199–207.Google Scholar
Murray, H.H. (2007) Applied Clay Mineralogy. Developments in Clay Science, 2. Elsevier, Amsterdam, 180 pp.Google Scholar
Panias, D., Taxiarchou, M., Paspaliaris, I. & Kontopoulos, A. (1996) Mechanisms of dissolution of iron oxides in oxalic acid solutions. Hydrometallurgy, 42, 257–265.CrossRefGoogle Scholar
Pickering, S.M. & Murray, H.H. (1994) Clays, Kaolin. Pp. 255–277 in: Industrial Minerals and Rocks, 6th edition (D.D. Carr, editor). SME, Littleton, Colorado).Google Scholar
Raghavan, P., Chandrasekhar, S., Vogt, V. & Gock, E. (2004) Separation of titanoferrous impurities from kaolin by high shear pretreatment and froth flotation. Applied Clay Science, 25, 111–120.CrossRefGoogle Scholar
Vogel, A.I. (2009) Text Book of Quantitative Chemical Analysis, 6th edition. Dorling Kindersley (India) Pvt.Ltd.Google Scholar
Waite, T.D. & Morel, F.M.M. (1984) Photoreductive dissolution of colloidal iron oxide: Effect of citrate. Journal of Colloid and Interface Science, 102, 121–137.Google Scholar
Zhengnan, L. & Veasey, T.J. (1988) An improved process for china clay beneficiation using high-gradient magnetic separation. Minerals Engineering, 1, 311–315.Google Scholar